1. Department of Clinical Laboratory, Jiaozhou Central Hospital, Qingdao 266300, China
2. Operation Room, Jiyang People’s Hospital, Jinan 251400, China
3. Radiophysics Department, The Affiliated Qingdao Central Hospital of Qingdao University, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao 266042, Shandong, China
4. Department of Rehabilitation Medicine, Qingdao Eighth People’s Hospital, Qingdao 266000, China
5. Department of Obstetrics, Yantaishan Hospital, Yantai 264000, China